Mower structure



MOWER STRUCTURE Original Filed Oct. 30, 1939 3 Sheets-Sheet l O q I I l m IO I I E? Ll.

(D m 1 IO INVENTOR.

HOWARD W. SIMPSON ATTORNEYS Aug. 5 1941. H. w. I SIMPSON MOWER STRUCTURE Original F'iled Oct. so, 1939 3 Sheets-Sheet 2 I NVEN TOR.

v w E om o T MT NA mm. D M! W O H g 5, 9 H. w. SIMPSON 2,251,378

' MOWER STRUCTURE Original Filed Oct. 30, 1959 3 Shet-Shet' s INVENTOR. HOWARD w. SIMPSON ATTORNEYS Patented Aug. 5, 1941 UNiTE' STATS MOWER STRUCTURE Howard W. Simpson, Dearborn, Mich, assignor to Detroit Harvester Company, Detroit, Mich, a corporation of lvlichigan Original application October 30, 1939, Serial No. 302,043, now Patent No. 2,245,447, dated June 1940,8erial-No. 345,662

16 'Claims.

Divided and this application July 15,

tor has a steering brake is and a gear shift lever l9. V

The mower structure B comprises a mower shoe 2i), a mower arm'2l rigid with said shoe, and a reciprocating sickle or cutter bar 22 carried by the mower arm 2 i. Preferably this structure is at the front of the tractor and is supported therefrom by a bracket 23 and a pair of rods 2 1 and 25, respectively. As shown, thebracket'23 is a porting means for the mower structure is casting and is hingedly connected at 26 to the mounted to swing vertically relative to the tractor, mower shoe 28. Such bracket 23 issleeved on Another object is to provide an assembly the rod 24 and carries a crank shaft 21 to which wherein a single means serves to swing the mower a pitman rod 28 for reciprocating the sickle bar structure and to swing the supporting means as 22 is connected. The rod 24 is disposed in front aforesaid of the tractor and is connected by a universal Another object is to provide an assembly joint 29 to a bracket 30cm the main frame It of wherein an element constituting a part of the the tractor at the remote side thereof. The rod swinging means just mentioned is carried by the is connected at its forward end to the rod it mower structure and'is engageable with a part of and eXtendS rearwardly through and dab y a the supporting meansto limit swinging movement 20 pivotauy engages bracket 3| fixed to h main of the mower structure relative to the supporting frame of the tractormeans By positioning the mower structure at the front Another object is t9 provids an aswmbly Where of the tractor it is possible to cut a square corner in the limiting element referred to cooperates in a hayfield' and m it gets to the with the supporting means {to cause the mower corner, the tractor is then in position to continue structure to be swung with the suportmg means on to the next right angle side of thefield without relative to the tractor delay. The described arrangement is s mple and Another object is to provide an assembly that easy to i -m and asseglblef In addition 1t issimple in construction, economical to manufac- 2521 antlal advantabes m nmmal Oper" ture and efiicient in operation.

Other objects, 'advantagesand novel details of t F01. mung the bracket about the reg M 1 o raise and lower the cutting edge of the slckle construction of this invention will be made 111018 b 22 lativo to mm d s a t P apparent as this description proceeds, especially re t g o O 42 hen considered in connection with the accom- 91g t of cu there: Is Fm upstanding arm. 5 an W 30 the bracket, an adjusting collar or sleeve c3 on ew- -W P the rod 25, and an adjustable link 34 terminally Flgure 1 1s a side elevation partly in section connected to Said Sleeve 33 and arm f tractor mowe? assembly For driving the cutter or sickle bar 22 from Figure 2 1S a top plan Vlew W parts bmken the tractor, I have provided a countershaft 35, y of thersame tractor mower; 4,0 pulleys 36 and. 31 on the countershaft and Figure 3 is a front elevation of the tractor power t k fi h ft H, endless belts wtramed o around said pulleys, and a propeller shaft 39 ter- Figure 4 is a vertical section through the hinge minany connected by universal joints g and H bea i a crank s'haftassemblvto the countershaft as and crank shaft 21:.

Referring now 170 t drawings, A is the To support the weight of the mower structure, tor, and B is the mower structure of an assembly I have provided a n crank 1ever 42 a u t embodying my inventio balancing spring :13 terminally connected to the As shown, the tractor A has a main frame W adjacent track frame It and to one arm is of the Supported y paced tubular members it 52 bell crank lever, and a chain terminally confrom lateral y SD endless track frames 53 0 nected to the other arm 45 of said bell'crank lever' and M. Enclosed within a housing 15 on the and t t mower Shoe 21 main frame ii) is an internal combustion engine I Order t t t mower Structure B may be ha a driving nectio (I101; Shown) With swung about the pivot 26 relative to its supporting endless tracks It on the track frames and havmeans, and the latter comprising the bracket 23 ing apower take-off shaft l1. As usual, the trac- 55 and rods 24 and 25 may be swung vertically relative to the tractor, I have provided an upstanding arm 50 on the mower shoe 20, a cable 5| trained around suitable pulleys 52 and 53 and terminally connected to said arm 50 and to a quadrant 54 rigid with a hand lever 55 pivoted at 56. As shown, the arm 50 is rigid with the shoe and is provided at its upper end with a nose piece 51 that is adapted to engage the bracket 23 when the mower arm 2| is swung upwardly a predetermined amount about the pivot 25. The cable 5| is secured to the arm 55 at its upper end and extends under the pulley 52 and over the pulley 53 to the quadrant 55 to which it is rigidly secured. The pulley 52 is carried by the bracket 23 substantially in horizontal alignment with the upper end of the arm 55 on the shoe, while the pulley 53 is substantially in vertical alignment with the pulley 52 and is carried by a bracket 58 fixed to the frame ID of the tractor. The hand lever 55 carrying the quadrant 55 is pivoted at 56 to a bracket 65 fixed to the frame ID of the tractor. This bracket 50 has a toothed sector 6| engageable by a spring pressed latch 62 on the hand lever 55 to hold the latter in adjusted position. A suitable hand operated release member 63 for the latch 62 is provided on the lever 55 and is connected by a rod 54 to said latch for actuating the same.

In use, when the lever 55 is pulled rearwardly, the cable 5| and pulley 52 will exert an upward pull on the bracket 23 tending to swing said bracket and rods 24 and upwardly about the universal joint 29 and bracket 3|. The arm 55 will then be pulled by the cable 5| toward the pulley 52 so that the mower arm 2| and shoe 25 will be swung upwardly about the pivot 25.

The nose piece 51 of the arm 55 will strike the bracket 23 when the mower arm 2| is in an up right position and therefore will limit or stop the upward swinging movement of the mower arm relative to the bracket 23 and rods 24 and 25 constituting the supporting means. However, as the lever 55 is pulled back further, the cable 5|, pulley 52 and engagement of the arm with the bracket 23 will cause the bracket 23, rods 24 and 25, mower arm 2| and shoe 2%] to be swung upwardly as a unit relative to the tractor. The latch 52 for the hand lever may engage the sector 6| and hold the parts in any position of adjustment. When the bracket 23 has been elevated, the shoe 25 will be clear of the ground, as is desirable when it is necessary to move the tractor for considerable distances without performing any cutting operations.

For assisting the upward swinging action of the mower arm 2| there is a spring Hi terminally connected to the upstanding arm 55 on the shoe and to the bracket 30 on the tractor. As will be evident, the spring 10 exerts a clockwise movement on the arm 55 tending to raise the cutter bar 22.

What I claim as my invention is:

- 1. In a tractor mower assembly, a tractor having a frame, a mower assembly including a mower shoe, means for supporting the assembly from the tractor including a pair of bars pivoted to the frame, a hinge bracket carried by said bars and connected to the shoe, an arm carried by the shoe and engageable with the bracket to limit swinging movement of the shoe, and means connected to the arm for swinging the shoe relative to the bracket and adapted when the arm strikes the bracket to lift the shoe, bracket and bars about the pivots for the latter.

2. In a tractor mower assembly, a tractor having a frame, a mower assembly, means supporting the mower assembly from the frame including a hinge bracket, a mower shoe pivoted to said bracket, and means for swinging the shoe about its pivot relative to the bracket, said means including an arm carried by the shoe and engageable with the bracket to limit such swinging movement.

3. In a tractor mower assembly, a tractor, a mower assembly, means for supporting said mower assembly from said tractor, said mower assembly being mounted to swing vertically relative to said supporting means, said supporting means being mounted to swing vertically relative to said tractor, and means for swinging the mower assembly relative to the supporting means including means for swinging the supporting means relative to the tractor.

4. In a tractor mower assembly, a tractor, a mower assembly, means for supporting said mower assembly from said tractor, said mower assembly being mounted to swing vertically relative to said supporting means, said supporting means being mounted to swing vertically relative to said tractor, and an element carried by the mower assembly and engageable with a part of the supporting means to limit swinging movement in one direction of the mower assembly.

5. In a tractor mower assembly, a tractor, a mower assembly, means for supporting said mower assembly from said tractor, said mower assembly being mounted to swing vertically relative to said supporting means, said supporting means being mounted to swing vertically relative to said tractor, and means for swinging the mower assembly relative to the supporting means including means engageable with a part of the supporting means to limit swinging movement in one direction of the mower assembly.

6. In a tractor mower assembly, a tractor, a mower assembly, means for supporting said mower assembly from said tractor, said mower assembly being mounted to swing vertically relative to said supporting means, said supporting means being mounted to swing vertically relative to said tractor, and means for swinging the supporting means including means carried by the mower assembly and engageable with the supporting means to cause the mower assembly to move with the supporting means.

'7. In a tractor mower assembly, a tractor, a mower assembly, means for supporting said mower assembly from said tractor, said mower assembly being mounted to swing vertically relative to said supporting means, said supporting means being mounted to swing Vertically relative to said tractor, an upstanding arm rigid with a part of the mower assembly, a pulley carried by a part of the supporting means, actuating means for said supporting means and mower assembly including an element fixed to said upstanding arm and engaging said pulley, and means terminally connected to said upstanding arm and tractor for assisting the actuating means aforesaid.

8. In a tractor mower assembly, the combination with a tractor, a bracket supported from the tractor so as to swing vertically relative thereto, and a mower assembly pivotally connected to the bracket, of means for swinging the bracket relative to the tractor and pivoting the mower assembly relative to the bracket including means carried by the mower assembly and engageable with the bracket to limit pivotal movement of the mower assembly relative to the bracket.

9. In a tractor mower assembly, the combination with a tractor, a bracket supported from the tractor so as to swing vertically relative thereto, and a mower assembly pivotally connected to the bracket, of means for swinging the bracket relative to the tractor and pivoting the mower assembly relative to the bracket including an upstanding arm rigid with the mower assembly, a pulley on the bracket substantially in horizontal alignment with the upper end of the arm, and a cable engaging the pulley and connected to said arm,

10. In a tractor mower assembly, the combination with a tractor, a bracket supported from the tractor so as to swing vertically relative thereto, and a mower assembly pivotally connected to the bracket, of means for swinging the bracket relative to the tractor and pivoting the mower assembly relative to the bracket including an upstanding arm rigid with the mower assembly, a pulley on the bracket, and a cable engaging the pulley and connected to said arm, said arm having a nose piece engageable with the bracket to cause the bracket and mower assembly to swing in unison relative to the tractor.

11. In a tractor mower assembly, the combination with a tractor, a bracket supported from the tractor so as to swing vertically relative thereto, and a mower assembly pivoted to said bracket, of means for swinging the bracket relative to the tractor and pivoting the mower assembly relative to the bracket including an upstanding arm on the mower assembly, a pulley on the bracket substantially in horizontal alignment with the upper end of the arm, a pulley carried by the tractor substantially in vertical alignment with the pulley aforesaid, and a cable engaging said pulleys and secured to said arm.

12. In a tractor mower assembly, the combination with a tractor, a bracket supported from the tractor so as to swing vertically relative thereto, and a mower assembly pivoted to said bracket, of means for swinging the bracket relative to the tractor and pivoting the mower assembly relative to the bracket including an upstanding arm on the mower assembly, a pulley on the bracket, a pulley carried by the tractor above the pulley aforesaid, a cable engaging said pulleys and secured to said arm, and means for assisting the swinging action of the mower assembly including a spring terminally connected to said arm and to said tractor.

13. In a tractor mower assembly, the combination with a tractor, of a bracket adjacent the tractor, supporting members for the bracket connected to the tractor so that the bracketmay swing vertically relative thereto, a mower assembly including a mower shoe connected to said bracket so that it can swing vertically relative to the bracket, and a single means for swinging the bracket relative to the tractor and for swinging the shoe relative to the bracket including an element carried by the mower assembly and engageable with the bracket, said member serving to limit swinging movement of the mower assembly relative to the supporting members and cooperating with the bracket to cause the mower assembly to swing with the supporting members relative to the tractor.

14. In a tractor mower assembly, the combination with a tractor, of a bracket adjacent the tractor, supporting members for the bracket connected to the tractor so that the bracket may swing vertically relative thereto, a mower assembly including a mower shoe connected to said bracket so that it can swing vertically relative to the bracket, and a single means for swinging the bracket relative to the tractor and for swinging the shoe relative to the bracket including an arm rigid with the shoe and engageable with the bracket, and a cable connected to said arm.

15. In a tractor mower assembly, the combination with a tractor, of a bracket adjacent the tractor, supporting members for the bracket connected to the tractor so that the bracket may swing vertically relative thereto, a mower assembly including a mower shoe connected to said bracket so that it can swing vertically relative to the bracket, and a single means for swinging the bracket relative to the tractor and for swinging the shoe relative to the bracket including an arm rigid with the shoe and engageable with the bracket, a pulley carried by the bracket substantially in horizontal alignment with the free end of the arm, and a cable connected to the free end of the arm and trained under said pulley.

16. In a tractor mower assembly, the combination with a tractor, of a bracket adjacent the tractor, supporting members for the bracket connected to the tractor so that the bracket may swing vertically relative thereto, a mower assembly including a mower shoe connected to said bracket so that it can swing vertically relative to the bracket, and a single means for swinging the bracket relative to the tractor and for swinging the shoe relative to the bracket including an arm rigid with the shoe and engageable with the bracket, a cable connected to said arm, and means for assisting the upward swinging movement of the mower assembly including a spring terminally connected to said arm and to said tractor.

HOWARD W. SIMPSON. 

